The installation position of the filter equipment of the four-column hydraulic press

The filter is a very important part in the hydraulic system and has a great role. Under normal circumstances, the installation position of the filter has the following several.

1, the equipment in the four-column oil press back oil circuit

The characteristic of the equipment method is that the strength requirement of the filter element of the four-column oil press is low, and the fine oil filter can be selected, but it can not directly prevent the impurity particles from entering the system, but improve the cleanliness of the oil in the four-column oil press tank by continuous circulation. In order to avoid the problem caused by the blockage of the four-column oil filter, a back pressure valve can be connected with the oil filter in parallel to create a safety effect.

2, four-column hydraulic press pump outlet or fine hydraulic components

This method has a good maintenance effect on the system and components of the four-column hydraulic press. The oil filter with high filtration accuracy and good impact resistance can be selected. The pressure of the oil filter is high, and the pressure loss is generally less than 0.35MPa. It is often used in filtration systems with high accuracy requirements and before servo valves and speed regulating valves.

3, four-column hydraulic press independent filtration system

In the large hydraulic system, in addition to the system's own equipment has a general oil filter, other hydraulic systems have no independent filtration system, high filtration accuracy, through continuous circulation, improve the cleanliness of the oil. The special oil filter truck is also an independent filtration system, which is used to filter and periodically filter the oil in the tank when refueling the equipment.

4, the equipment is in the suction port of the four-column oil press pump

The method can directly prevent large particles from entering the hydraulic pump of the four-column hydraulic press. The four-column oil press is required to be more than twice the flow rate of the hydraulic pump, the pressure loss is less than 0.01 ~ 0.035MPa, and the oil filter with low filtration accuracy.